Gasoline Rises as Refineries Close

U.S. gasoline futures rose while crude-oil prices fell, as refineries along the Gulf Coast began to cease operations ahead of Tropical Storm Isaac—and fuel traders braced for the possibility of gasoline shortages.

Gasoline futures for September delivery settled 7.68 cents, or 2.5%, higher, at $3.1548 a gallon on the New York Mercantile Exchange,...